DIMERIA, ANDROPOHONEJE (AUCT. EDUARDO HACKEL). 87 
C. Racemi in apice culmi simplicis 4—10, rarissime 3, digitati v. fasciculati. 
Perennes. — Culmi erecti. Ligula brevissima, truncata, membranacea, 
glabra v. ciliolata. Racemi secus rhacheös communis nodos sibi a approxi- 
matos alterni v. oppositi, breviter pedicellati v. subsessiles, erecto-patuli 
nec demum divergentes, callus igitur ille ad basin racemorum cujus 
ope demum a culmo deflectuntur in speciebus sectionis B., in sect. C. 
deest. Spiculæ lineares. Gluma IIda Imam yix superans, prope carinam 
coriacea, margine membranacea; IVa quam IIda !/4— '/4 brevior, lineari- 
oblonga, breviter bidentata, hyalina, superne membranacea, glabra 
(raro ciliolata); ariste columna fusco-castanea subulä pallidá rectä 
v. basi laxe tortá 2—3-plo brevior. Anthers 2,5 mm. longs ; styli stigma- 
tibus 1,5 mm. longis subbreviores. 
a. Rhachis dorso plana latiuscula (fere 1mm. lata) margine acutissima, 
ciliata. Innovationes intravaginales ', basi ut culmus sine squamis aphyllis. 
10. D. pilosissima (Trin. in Mém. Acad. Petersb. ser. 6, vol. 2., 
p. 336). Haplachne pilosissima J. S. Presl! in C. B. Presl Reliqu. 
Haenk. 1, p. 235 tab. 38. Andropogon chloridiformis Gaudich.! in 
Freyc. Voy. p. 412. 
Culmus basi vaginis emortuis elongatis frustulatim dilabentibus 
cinctus, 50—60 em. altus, subgracilis, 4-nodis, tertiusculus, glaberri- 
mus v. infra racemos paullulum pubescens, apice breviter nudus. 
Folia undique dense villosa, villis canescentibus basi tubereulatis, 
disticho-patentibus, in folio summo parcis v. evanidis. Vaginæ tere- 
tiuscule superne carinatz, inferiores internodia superantes, supe- 
riores iis paullo breviores, nodis barbatulis. Laminæ e basi subangus- 
tata a vagina parum distincta lineares (medio paullo latiores), 12—20 
cm. longs, 4—5 mm. late, summa non rudimentaria sed 2—3 em. 
longa, rigidulz, glaucescentes, nervis lateralibus 3—4 vix prominulis 
pereurss. Racemi quini, 8—10 cm. longi, rhachi communi pilosulie 
insidentes, simplices, subrobusti, pilosi, densiflori ; rhachis compressa 
' Cfr. Hackel, Monogr. Fest. europ. pp. 3, 81. Intravaginales dicuntur inno- 
vationes, quæ intra vaginas quarum in axillis enatze sunt, succrescunt, przefolio 
dorsali vaginam subsequanti incipiunt statimque ad folia perfecta (vaginis 
laminisque instructa) progrediuntur; extravaginales qu; vaginam matricem 
basi perrumpunt vel post ejus dilapsum, semper igitur extra eam, succrescunt, 
præfolio dorsali brevissimo incipiunt et sensim per folia manciora (vaginis 
laminisque abbreviatis v. rudimentariis instructa), ad perfecta progrediuntur ; 
mixte in eadem planta utrumque innovandi modum exhibent. 
